Can't sync special candies after factory restored my phone

Sadly, you have permanently lost the candy in this situation.
Whatever device you play on, there is some data that's stored directly on that device. It allows you to use them to play when you're offline. 
Any time the data is cleared from your device you'll lose accumulated candy as well as the lives you have left and whatever is in the in-app mailbox. If It's a part of the game that you can't use or access without being on the internet it'll be synced because that data is stored on King's servers.
If you play on different devices, they will not have the same #of boosters, mail, or lives. The only things that'll match from one device to the next are the ongoing "features", and that's IF those match. They don't have to match, either. The features are actually random from device to device. My Mom has never had the "same" game on the two devices she uses to play.
I'm sorry you lost all of that stuff... 😒 it's very disappointing.

✌😎

I wish I could say yes, but there isn't. Facebook is the interface that gives you the ability to save the data and progress that are across the platforms you use to play.
If you aren't online and signed in to Facebook you don't even have the same people as friends. on the teams or in the races that you have when you ARE signed in to Facebook.
The game pulls those people from your list of friends on Facebook. If they aren't your friends there they won't show up in the game either.
If you have a Facebook account and a king.com account and are signed in on FB on one and King.com on a different device you'll be playing and competing with random strangers on the King.com device. Your progress in the game will be synced, but that's it. 
I don't have as many friends too trade lives with as my MOM! LoL 
✌😎

Exactly.,that's what I was trying to say. They match because you're signed in to Facebook. That data, your list of friends, isn't stored on your phone for this purpose. They are "Facebook" friends and the only place you'll find that exact list of friends is there because that list is stored BY Facebook. 
It doesn't come from the contacts list on your phone or tablet or PC. 
It you don't have a Facebook account you can play with an account created on King.com. Then you'd have a list of people you don't know as "friends". 
They want you to be able to play the game when you're not online so that ever-changing smallish amount of data, your lives and boosters, is stored on your phone. You can play and play and not be online to do it. But you won't be able to save your progress until you get to WiFi and your device is able to hand that information over to King and Facebook. They can't keep track of data that's completely stored on your phone and aren't tasked to do so. That's a LOT of constantly changing data that they don't have to leave space open for on their servers, too.
So if you ever do play when you don't have access to the internet, don't close the game until you are online and you know you've saved your progress.
✌😎